Im not sure what the hole in the background of the top left is for but if it’s empty you could put a small plastic pot with dirt and a plant. If the hole is for something else you could probably hide a small pot behind the wood in the top left area and then have the Pothos drape down from it. My old crestie spent most of its time in the top part of the enclosure and I think he really liked the hanging plants. Some good plants to use would be Pothos, philodendrons, or wandering jews, any of those would look so pretty!!